Micro fogging device and method

Abstract

The present invention relates to micro fogging device and method which can spray micro fog-like fine water droplet to be used, for example, for protected cultivation, such as green houses, or barns. The micro fogging device can supply fog tinier than the conventional low pressure foggers, and includes: a low pressure fogger unit for forming fog at low pressure; and a venture nozzle which is coupled to a coupling pipe of the low pressure fogger unit to finely segment/divide the water droplets supplied from the low pressure fogger unit, thereby minimizing usage of water and compressed air and maximizing the effectiveness of fog generation.

What is claimed is: 
     
       1. A micro fogging device comprising:
 a low pressure fogger unit for forming fog using water or liquid supplied to the fogger unit, the low pressure fogger unit including a nozzle boy, a coupling pipe extending from the nozzle body, and a nozzle hole formed through the coupling pipe to provide fog there-through using water or liquid supplied to the fogger unit; and 
 a venturi nozzle coupled to the low pressure fogger unit for providing micro fog using the fog provided by the low pressure fogger unit, the venturi nozzle including a first coupler with an inflow hole extending in a longitudinal direction, the inflow hole in fluid communication with compressed air, an expansion hole formed in the venturi nozzle at an opposite side from the inflow hole, and a throttle area between the inflow hole and the expansion hole, the throttle area having a diameter smaller than that of the inflow hole and the expansion hole, 
 wherein the venturi nozzle further includes a second coupler extending at a right angle from the first coupler, with a flow path formed in the second coupler, the flow path in fluid communication with the throttle area of the venturi nozzle, 
 wherein the coupling pipe of the low pressure fogger unit is coupled to the second coupler of the venturi nozzle, and as a consequence, fog provided through the nozzle hole of the low pressure fogger unit is finitely segmented or divided as the fog passes the throttle area of the venturi nozzle via the flow path in the second coupler, and thus, producing micro fog when the compressed air is provided through the inflow hole of the venturi nozzle, 
 wherein the venturi nozzle has a vortex pin installed to the inflow hole of the venturi nozzle, the vortex pin extending longitudinally in the direction of the inflow hole and including a vortex piece of twisted shape configured to form a vortex to the compressed air provided through the inflow hole of the venturi nozzle, and consequently, to the micro fog discharging from the venturi nozzle, 
 wherein the vortex pin further includes a vertical division piece at a proximal area of the vortex piece, and a retaining jaw formed between the vortex piece and the vertical division piece, and wherein the vortex piece has a cross-section smaller than that of the vertical division piece.